Bilibili Danmaku (Bullet Comment) Scraper

Extract every timed danmaku — the "bullet comments" that fly across the screen of a Bilibili video — together with the exact second in the video each one was posted at. It is a crowd-sourced, second-by-second reaction stream with no clean Western equivalent, ideal for sentiment analysis, highlight detection, and engagement research.

Why use this actor

• No account, no login, no API key — just paste a video id or link and run.
• A dataset you can't get elsewhere — the flying on-screen comments, each pinned to its moment in the video timeline. Great for spotting the funniest, most-hyped, or most-controversial seconds of a video.
• Discover what's hot — a "popular" mode that first pulls Bilibili's trending videos, then collects their comments, so you don't need to know video ids in advance.
• Clean, structured output — one row per comment with its timestamp-in-video, post time, colour, on-screen style, and an anonymized sender tag. Ready for spreadsheets, databases, or pipelines.
• Runs on a schedule with automatic retries — export to JSON, CSV, or Excel. No scrapers or browsers to babysit.

How it works

1. Choose a mode: paste your own videos, or let the actor pull the current trending feed.
2. For each video, the actor looks up the video (including its individual parts, if any).
3. It collects the full set of on-screen comments for the video and reads out each comment's text, its position in the video timeline, and when it was posted.
4. Every comment becomes one row in your dataset.

You never manage scrapers, browsers, or blocks — just provide videos and read the results.

Input

Mode: Video (by BV id / link) — you supply the videos.

{
  "mode": "video",
  "videos": ["BV1juM36LEg6"],
  "firstPartOnly": true,
  "maxDanmakuPerVideo": 0,
  "maxItems": 500
}

Mode: Popular (trending feed) — the actor discovers videos for you.

{
  "mode": "popular",
  "popularPages": 1,
  "pageSize": 20,
  "maxItems": 500
}

Field	Type	Description
mode	string	video (use the videos you provide) or popular (discover trending videos first). Default video.
videos	array of strings	Video mode. Bilibili BV ids (e.g. BV1juM36LEg6) or full video links (https://www.bilibili.com/video/BV1juM36LEg6). The id is read from a link automatically.
firstPartOnly	boolean	Many videos have several parts. true (default) pulls comments from only the first part; false pulls from every part.
popularPages	integer	Popular mode. How many pages of the trending feed to walk (default 1).
pageSize	integer	Popular mode. Videos per trending page (default 20, max 50).
maxDanmakuPerVideo	integer	Cap on comments per video. 0 = no cap.
maxItems	integer	Overall cap on rows for the whole run. 0 = no cap.
proxyConfiguration	object	Optional. Not required; residential proxy support is available if an address gets rate-limited.

Output

One row per comment (the sample below is a real trending video, Chinese text as posted):

{
  "_input": "popular:BV1juM36LEg6",
  "_scrapedAt": "2026-07-09T11:08:42Z",
  "_source": "S1-danmaku-xml",
  "bvid": "BV1juM36LEg6",
  "aid": 116883726602536,
  "cid": 39758924412,
  "videoTitle": "再干！",
  "part": "再干！",
  "page": 1,
  "progressSec": 662.138,
  "mode": 5,
  "fontsize": 25,
  "color": 15772458,
  "colorHex": "#F0AB2A",
  "sendTime": 1783588689,
  "sendTimeISO": "2026-07-09T09:18:09Z",
  "pool": 0,
  "userHash": "68e23934",
  "dmid": "2151656896334603776",
  "text": "第二天小杨因左脚先踏进办公室而奖励1000"
}

Field	Type	Description
bvid	string	The video's public id.
aid	integer	The video's numeric id.
cid	integer	Id of the specific video part these comments belong to.
videoTitle	string	Title of the video.
part	string	Title of the part (for multi-part videos).
page	integer	Part number within the video.
progressSec	number	Where in the video the comment appears, in seconds.
mode	integer	On-screen style: 1–3 scrolling, 4 bottom, 5 top, 6 reverse, 7 advanced, 8 code, 9 special.
fontsize	integer	Comment font size.
color / colorHex	integer / string	Comment colour, as a number and as a hex code (#F0AB2A).
sendTime / sendTimeISO	integer / string	When the comment was posted (Unix seconds and ISO date).
pool	integer	Comment pool: 0 normal, 1 subtitle, 2 special.
userHash	string	Anonymized tag for the sender (not a real identity).
dmid	string	Unique id of the comment.
text	string	The comment itself.

On failure (e.g. a removed or invalid video) the actor writes an error row instead of skipping silently:

{ "_input": "...", "_scrapedAt": "...", "_error": "api_code_-404", "_errorDetail": "...", "bvid": "..." }

Notes & limits

• For very busy videos Bilibili itself serves a capped sample of roughly 3,600 comments per part — that is a source-side limit, not the actor.
• No account is required. A proxy is optional; turn on residential proxy support only if an address gets rate-limited.
• Chinese-language comments are returned exactly as posted (Unicode).